High reliability low latency mission critical communication

ABSTRACT

Systems and methods for communicating mission-critical (MiCri) data in a network including a base station and user equipment (UE) are provided. The methods may include receiving a request message requesting MiCri data, and transmitting the MiCri data during a transmission time interval (TTI) of a first carrier component or during a transmission time interval (TTI) of a second carrier component. In various aspects, the TTI of the first carrier component may be staggered in time with respect to the TTI of the second carrier component. In another aspect, the UE may pre-report interference pattern information for a nominal TTI for use in communication of MiCri data.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims priority to and the benefit of the U.S.Provisional Patent Application No. 62/075,099, filed Nov. 4, 2014, whichis hereby incorporated by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to communication networks, and moreparticularly to communicating mission-critical (MiCri) data among theelements of the communication networks with high reliability and lowlatency.

BACKGROUND

Communication networks include elements such as base stations andwireless communication devices. Both the base stations and the userequipments include transceivers that allow the base stations and theuser equipments to wirelessly communicate, i.e., to transmit and toreceive, data in the communication network. When the base stations anduser equipments wirelessly communicate mission-critical (MiCri) data,such communications are required to be highly reliable and the errorrate associated with such communications is required to be very low. Forexample, a block error rate (BLER) of about 1e⁻⁴ is required forcommunication of the MiCri data. In addition, such communications arerequired to be completed with low latency. The present disclosureproposes systems and methods to accomplish the above described highreliability low latency (HRLL) mission-critical data communication.

The MiCri data may be associated with mission-critical applicationsbeing used by mission-critical user equipments. One example of amission-critical user equipment is a driverless vehicle being drivenelectronically without human input. The driverless vehicle mayfrequently request MiCri data to learn information regarding othervehicles on the road, traffic patterns, and the like, allowing thedriverless vehicle to keep track of its position and be able to reactaccordingly while on the road. As can be appreciated, the driverlessvehicles should be able to receive the requested MiCri data with highreliability and low latency to ensure proper operation and to avoidaccidents. Another example of a mission-critical user equipment is amerger unit in an energy system. The merger unit is responsible forcollecting and evaluating high-frequency data associated with measuredvoltage/current values to predict any abnormal conditions that may occurwithin the energy system, and quickly communicate instruction data tothe appropriate unit of the energy system to allow the abnormalcondition to be avoided. Again, as can be appreciated, the merger unitshould be able to communicate MiCri data such as the high-frequency dataassociated with the measured voltage/current values and the instructiondata with high reliability and low latency to avoid the abnormalcondition. As can be appreciated, the present disclosure is applicableto any MiCri data, situations, and applications.

SUMMARY

In one aspect, the present disclosure proposes a method for wirelesscommunication, the method including receiving, at a first device, arequest message from a second device requesting mission critical (MiCri)data; and transmitting, from the first device, the MiCri data to thesecond device during a transmission time interval (TTI) of a firstcarrier component or during a transmission time interval (TTI) of asecond carrier component, the TTI of the first carrier component beingstaggered in time with respect to the TTI of the second carriercomponent.

In one aspect, the present disclosure proposes a method for wirelesscommunication, the method including transmitting, from a first device, areference signal to a second device during a first transmission timeinterval (TTI) of a carrier component; receiving, at the first device,an indication of an interference pattern experienced by the seconddevice for a duration of the first TTI, the indication being based onthe reference signal; and transmitting, from the first device, MiCridata to the second device during the first TTI of the carrier componentusing a hybrid automated repeat request (HARQ) block based on theindication.

In one aspect, the present disclosure proposes a method for wirelesscommunication, the method including transmitting, to a first device froma second device, a request message requesting mission critical (MiCri)data; and receiving, at the second device, the MiCri data from the firstdevice during a transmission time interval (TTI) of a first carriercomponent or during a transmission time interval (TTI) of a secondcarrier component, the TTI of the first carrier component beingstaggered in time with respect to the TTI of the second carriercomponent.

In one aspect, the present disclosure proposes a method for wirelesscommunication, the method including receiving, from a first device at asecond device, a reference signal during a first transmission timeinterval (TTI) of a carrier component; transmitting, from the seconddevice, an indication of an interference pattern experienced by thesecond device based on the reference signal; and receiving, at thesecond device, MiCri data from the base station during the first TTI ofthe carrier component using a hybrid automated repeat request (HARQ)block based on the indication.

In one aspect, the present disclosure proposes a base station includinga receiver configured to receive a request message from a first devicerequesting mission critical (MiCri) data; and a transmitter configuredto transmit the MiCri data to the first device during a transmissiontime interval (TTI) of a first carrier component or during atransmission time interval (TTI) of a second carrier component, whereinthe TTI of the first carrier component is staggered in time with respectto the TTI of the second carrier component.

In one aspect, the present disclosure proposes a base station includinga transmitter configured to transmit a reference signal to a firstdevice during a first transmission time interval (TTI) of a carriercomponent; a receiver configured to receive an indication of aninterference pattern experienced by the first device for a duration ofthe first TTI, the indication being based on the reference signal,wherein the transmitter is configured to transmit MiCri data to thefirst device during the first TTI of the carrier component using ahybrid automated repeat request (HARQ) block based on the indication.

In one aspect, the present disclosure proposes a user equipment (UE)including a transmitter configured to transmit a request message to afirst device requesting mission critical (MiCri) data; and a receiverconfigured to receive the MiCri data from the first device during atransmission time interval (TTI) of a first carrier component or duringa transmission time interval (TTI) of a second carrier component,wherein the TTI of the first carrier component is staggered in time withrespect to the TTI of the second carrier component.

In one aspect, the present disclosure proposes a user equipment (UE)including a receiver configured to receive a reference signal from afirst device during a first transmission time interval (TTI) of acarrier component; a transmitter configured to transmit an indication ofan interference pattern experienced by the UE based on the referencesignal, wherein the receiver is configured to receive MiCri data fromthe first device during the first TTI of the carrier component using asingle hybrid automated repeat request (HARQ) block based on theindication.

In one aspect the present disclosure proposes a wireless communicationnetwork including means for receiving a request message from a firstdevice requesting mission critical (MiCri) data; and means fortransmitting the MiCri data to the first device during a transmissiontime interval (TTI) of a first carrier component or during atransmission time interval (TTI) of a second carrier component, the TTIof the first carrier component being staggered in time with respect tothe TTI of the second carrier component.

In one aspect the present disclosure proposes a wireless communicationnetwork including means for transmitting a reference signal to a firstdevice during a first transmission time interval (TTI) of a carriercomponent; means for receiving an indication of an interference patternexperienced by the first device for a duration of the first TTI, theindication being based on the reference signal, wherein the means fortransmitting transmits MiCri data to the first device during the firstTTI of the carrier component using a single hybrid automated repeatrequest (HARQ) block based on the indication.

In one aspect the present disclosure proposes a wireless communicationnetwork including means for transmitting a request message to a firstdevice requesting mission critical (MiCri) data; and means for receivingthe MiCri data from the base station during a transmission time interval(TTI) of a first carrier component or during a transmission timeinterval (TTI) of a second carrier component, the TTI of the firstcarrier component being staggered in time with respect to the TTI of thesecond carrier component.

In one aspect the present disclosure proposes a wireless communicationnetwork including means for receiving a reference signal from a firstdevice during a first transmission time interval (TTI) of a carriercomponent; and means for transmitting an indication of an interferencepattern experienced by a second device based on the reference signal,wherein the means for receiving receives MiCri data from the basestation during the first TTI of the carrier component using a singlehybrid automated repeat request (HARQ) block based on the indication.

In one aspect the present disclosure proposes a computer readable mediumhaving program code recorded thereon, the program code including codefor causing a computer operating in a network to receive a requestmessage from a first device requesting mission critical (MiCri) data;and code for causing the computer operating in the network to transmitthe MiCri data to the first device during a transmission time interval(TTI) of a first carrier component or during a transmission timeinterval (TTI) of a second carrier component, the TTI of the firstcarrier component being staggered in time with respect to the TTI of thesecond carrier component.

In one aspect the present disclosure proposes a computer readable mediumhaving program code stored thereon, the program code including code forcausing a computer operating in a network to transmit a reference signalto a first device during a first transmission time interval (TTI) of acarrier component; code for causing the computer operating in thenetwork to receive an indication of an interference pattern experiencedby the first device for a duration of the first TTI, the indicationbeing based on the reference signal; and code for causing the computeroperating in the network to transmit MiCri data to the first deviceduring the first TTI of the carrier component using a hybrid automatedrepeat request (HARQ) block that accounts for the interference patternexperienced by the first device during the first TTI of the carriercomponent.

In one aspect the present disclosure proposes a computer readable mediumhaving program code stored thereon, the program code including code forcausing a computer operating in a network to transmit a request messageto a first device requesting mission critical (MiCri) data; and code forcausing the computer operating in the network to receive the MiCri datafrom the first device during a transmission time interval (TTI) of afirst carrier component or during a transmission time interval (TTI) ofa second carrier component, the TTI of the first carrier component beingstaggered in time with respect to the TTI of the second carriercomponent.

In one aspect the present disclosure proposes a computer readable mediumhaving program code recorded thereon, the program code including codefor causing a computer operating in a network to receive a referencesignal from a first device during a first transmission time interval(TTI) of a carrier component; code for causing the computer operating inthe network to transmit an indication of an interference patternexperienced by the UE based on the reference signal; and code forcausing the computer operating in the network to receive MiCri data fromthe first device during the first TTI of the carrier component using ahybrid automated repeat request (HARQ) block based on the indication.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a communication network 100 according to an aspect ofthe present disclosure.

FIG. 2 illustrates an exemplary configuration 200 of a communicationnetwork according to as aspect of the present disclosure.

FIG. 3 illustrates an exemplary configuration 300 of a communicationnetwork according to an aspect of the present disclosure.

FIG. 4 illustrates a method 400 according to an aspect of the presentdisclosure.

FIG. 5 illustrates an exemplary configuration 500 of a communicationnetwork according to an aspect of the present disclosure.

FIG. 6 illustrates a method 600 according to an aspect of the presentdisclosure.

FIG. 7 illustrates a block diagram of an exemplary system 700 forcommunicating MiCri data according to various aspects of the present.

DETAILED DESCRIPTION

The detailed description set forth below, in connection with theappended drawings, is intended as a description of variousconfigurations and is not intended to represent the only configurationsin which the concepts described herein may be practiced. The detaileddescription includes specific details for the purpose of providing athorough understanding of the various concepts. However, it will beapparent to those skilled in the art that these concepts may bepracticed without these specific details. In some instances, well-knownstructures and components are shown in block diagram form in order toavoid obscuring such concepts.

As discussed above, mission-critical applications require that MiCridata be communicated with high reliability and low latency. Thisapplication proposes systems and methods to accomplish communication ofsuch high reliability low latency (HRLL) MiCri data and high reliabilitymoderate latency (HRML) MiCri data. In this regard, HRLL MiCri dataincludes data requiring low error rates (e.g., a BLER less than 1e⁻³,1e⁻⁴, or smaller) and very short latency times (e.g., having a HARQroundtrip time (RTT) less than 200 μs, 100 μs, or shorter), while HRMLMiCri data includes data requiring similarly low error rates, but withslightly longer latency times (e.g., having a HARQ RTT less than 5 ms, 3ms, 1 ms, or shorter).

FIG. 1 illustrates a communication network 100 according to variousaspects of the present disclosure. The communication network 100 mayinclude elements such as base stations 110 and wireless communicationdevices 120 in communication with each other. A base station 110 mayinclude an evolved Node B (eNodeB) in the LTE context, for example. Abase station 110 may also be referred to as a base transceiver stationor an access point. A wireless communication device 120 may be referredto as a user equipment (UE). The wireless communication devices 120 maybe dispersed throughout the communication network 100, and may bestationary or mobile. A wireless communication device 120 may also bereferred to as a terminal, a mobile station, a subscriber unit, and thelike. A wireless communication device 120 may be a cellular phone, asmartphone, a personal digital assistant, a wireless modem, a laptopcomputer, a tablet computer, and the like. The communication network 100is one example of a network to which various aspects of the disclosureapply.

The techniques described herein may be used for various wirelesscommunication networks such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA andother networks. The terms “network” and “system” are often usedinterchangeably. A CDMA network may implement a radio access technologysuch as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRAincludes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000covers IS-2000, IS-95 and IS-856 standards. A TDMA network may implementa radio access technology such as Global System for MobileCommunications (GSM). An OFDMA network may implement a radio accesstechnology such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB),IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc.UTRA and E-UTRA are part of Universal Mobile Telecommunication System(UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are newreleases of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSMare described in documents from an organization named “3rd GenerationPartnership Project” (3GPP). CDMA2000 and UMB are described in documentsfrom an organization named “3rd Generation Partnership Project 2”(3GPP2). The techniques described herein may be used for the wirelessnetworks and radio access technologies mentioned above as well as otherwireless networks and radio technologies, such as a next generation(e.g., 5^(th) Generation (5G)) network.

The communication among the base stations 110 and the wirelesscommunication devices 120 may be carried out over one or more carriercomponents (CCs). Each carrier component (CC) may carry control data,user data, or both (generally referred to as data). For example, a basestation 110 may transmit data to a wireless communication device 120 viaone or more downlink control carrier components and via one or moredownlink data carrier components. A wireless communication device 120may transmit data to a base station 110 via one or more uplink controlcarrier components and via one or more uplink data carrier components.

FIG. 2 illustrates an exemplary configuration 200 of a control carriercomponent 210 and a data carrier component 220 according to variousaspects of the present disclosure. The control carrier component 210includes an uplink control carrier component 201 and a downlink controlcarrier component 202. As can be appreciated, each of the uplink and thedownlink components may have one or more component carriers (CCs), andeach component carrier may be able to carry control, data, or both.

Returning to FIG. 2, the data carrier component (Data CC) 220 may bedivided into nominal transmission time intervals (TTIs) 221, 222, eachof which may be further divided into thinner time intervals of timereferred to herein as thin-TTIs. Similar to the data carrier component220, each of the uplink control carrier component (Uplink CCC) 201 andthe downlink control carrier component (Downlink CCC) 202 may be dividedinto thin-TTIs, as shown in FIG. 2. The base station 110 may divide userdata to be transmitted to various wireless communication devices 120into blocks, and may transmit these blocks of data to the wirelesscommunication devices 120 over the data carrier component 220 duringnominal TTIs 221, which are further divided into thin-TTIs. The basestation 110 may transmit control data to respective wirelesscommunication devices 120 during the thin-TTIs of the downlink controlcarrier component. Similarly, respective wireless communication devices120 may transmit control data to the base station 110 during thethin-TTIs of the uplink control carrier component. According to variousaspects of the present disclosure, a nominal TTI 220 may have a durationof about 200-400 μs while a thin-TTI may have a duration of about 25 μs.For example, in FIG. 2, the nominal TTI has a duration of 400 μs and isdivided into 16 thin-TTIs, each thin-TTI having a duration of 25 μs.However, each nominal TTI may be divided into any number of thin-TTIs.

As discussed above, when a wireless communication device 120 is involvedin a mission-critical application, the wireless communication device 120needs to be able to receive the MiCri data with high reliability and lowlatency. To achieve compliance with the required high reliability andlow latency, a base station 110 may transmit the MiCri data to thewireless communication device 120 by transmitting hybrid automatedrepeat request (HARQ) blocks over the data carrier component. Forexample, the base station 110 may receive, over the uplink controlcarrier component 201, a request message 270 during a thin-TTI 222 overthe uplink control carrier component 201 from the wireless communicationdevice 120 requesting MiCri data. In response to receiving the requestmessage 270, the base station 110 may transmit, over the downlinkcontrol carrier component 202, a grant message 261 indicating to thewireless communication device 120 that the request for the MiCri datahas been granted. The grant message 261 may also include an assignmentof downlink resources on which the MiCri data will be transmitted.Further, the base station 120 may transmit, over the data carriercomponent 220, a first HARQ block 251 during a thin-TTI 222 within apresent nominal TTI 221.

The wireless communication device 120 may receive the transmitted firstHARQ block 251, and run a cyclic redundancy check (CRC) to detecttransmission errors associated with the transmission of the first HARQblock. If the CRC detects that the transmission is in compliance withthe high reliability and low latency requirements, then the wirelesscommunication device 120 may transmit, over the uplink control carriercomponent 201, an acknowledgment message 371 indicating satisfactoryreception of the MiCri data received in the form of the first HARQblock. However, if the CRC detects transmission errors in violation ofthe high reliability and low latency requirements, the wirelesscommunication device 120 may transmit, over the uplink control carriercomponent 201, a negative acknowledgment message 371 indicatingunsatisfactory reception of the MiCri data. In the negativeacknowledgment message 371, the wireless communication device 120 mayalso indicate the interference pattern experienced by the wirelesscommunication device 120 during the present nominal TTI 221.

Upon receiving the negative acknowledgment message 271, the base station110 may transmit a second HARQ block 252 to complete communication ofthe MiCri data. Further, the base station 110 may transmit the secondHARQ block 252 by taking into account the interference pattern indicatedas being experienced by the wireless communication device 120 during thepresent nominal TTI 221. Because the transmission of the second HARQblock 252 takes into account the interference pattern experienced duringthe present normal TTI, this transmission should ensure that the secondHARQ block 252 may be received by the wireless communication device 120in compliance with the high reliability and low latency requirements.Finally, the base station 110 should receive an acknowledgment message272 indicating satisfactory reception of the MiCri data in the form ofthe second HARQ block 252.

However, this may be true when the second HARQ block is also transmittedand received during the present nominal TTI 221. This is because, due tothe changing carrier component conditions and other interfering activityconducted by neighboring base stations and wireless communicationdevices, the interference patterns experienced by the wirelesscommunication device 120 during two separate nominal TTIs 221, 222 aredifferent with respect to each other. That is, the interference patternexperienced by the wireless communication device 120 during the presentnominal TTI 221 is different from the interference pattern experiencedby the wireless communication device 120 during the next nominal TTI222. Therefore, to ensure that the MiCri data may be received by thewireless communication device 120 in compliance with the highreliability and low latency requirements, the base station 110 shouldensure that both the first HARQ block 251 and the second HARQ block 252are transmitted and received during a common nominal TTI.

However, it may not be possible for the base station 110 to ensure thatthe first HARQ block 251 and the second HARQ block 252 are transmittedand received during a common nominal TTI. For example, as shown in FIG.2, once the base station 110 transmits an HARQ block, the base station110 receives the acknowledgment message or the negative acknowledgmentmessage within, for example, two thin-TTIs from the transmission of theHARQ block. Subsequently, when the base station 110 receives thenegative acknowledgment, the base station 110 is able to transmit thesecond HARQ block within another, for example, two thin-TTIs from thereception of the negative acknowledgment. As such, as seen in thefigures, the time period required for transmissions of the first HARQblock and the second HARQ block is, for example, five thin-TTIs. As canbe appreciated, the above predetermined response time periods of twothin-TTIs and five thin-TTIs are exemplary, and may vary fromcommunication network to communication network. A communication networkmay determine predetermined threshold time periods, and ensure that thefirst HARQ block 251 and the second HARQ block 252 are transmitted andreceived during a common nominal TTI accordingly.

During this time period, the duration of the present nominal TTI mayend, and the base station 110 may have to transmit the second HARQ blockduring the next nominal TTI. As discussed below, such transmission ofthe second HARQ block may not ensure compliant reception of the MiCridata even when the transmission of the second HARQ block takes intoaccount the interference pattern experienced by the wirelesscommunication device 120 during the present nominal TTI. This is becausethe interference pattern experienced by the wireless communicationdevice 120 during the present nominal TTI is different from theinterference pattern experienced by the wireless communication device120 during the next nominal TTI in which the second HARQ block wastransmitted and received. In this way, communication of the MiCri datamay fail.

For example, the base station 110 may receive a request message 280 fromthe wireless communication device 120 towards the latter part of anominal TTI (e.g., TTI 222). In this case, the base station 110 maytransmit a grant message 263 and a first HARQ block 253 during the firstavailable thin-TTI within the present nominal TTI 222, and wait toreceive the acknowledgment message or the negative acknowledgmentmessage 281 from the wireless communication device 120 prior totransmitting the second HARQ block. As seen in FIG. 2, when the basestation 110 receives an acknowledgment message 281, no further actionwith respect to transmission of the MiCri data is necessary because theacknowledgment message 281 indicates satisfactory reception of the MiCridata in the form of the first HARQ block 253. However, when the basestation 110 receives a negative acknowledgment message 281, it isdifficult to ensure satisfactory reception of the MiCri data. This isbecause, during this time period, the duration of the present nominalTTI 222 has ended, and the base station 110 will have to transmit thesecond HARQ block 265 (not shown) during the next nominal TTI 223 (notshown). As discussed above, such transmission of the second HARQ block265 may not ensure compliant reception of the MiCri data even when thetransmission of the second HARQ block 265 takes into account theinterference pattern experienced by the wireless communication device120 during the present nominal TTI 222. This is because the interferencepattern experienced by the wireless communication device 120 during thepresent nominal TTI 222 is different from the interference patternexperienced by the wireless communication device 120 during the nextnominal TTI 223 in which the second HARQ block 265 would be transmittedand received. In this way, communication of the MiCri data may fail.

The present disclosure proposes methods and systems to avoid the abovedescribed failure during communication of the MiCri data. According tovarious aspects, the present disclosure proposes including a second datacarrier component in addition to the first data carrier component.Further, the present disclosure proposes staggering in time the nominalTTIs of the second data carrier component with respect to the nominalTTIs of the first data carrier component. Such a configuration isillustrated in FIG. 3.

FIG. 3 illustrates another exemplary configuration of a communicationnetwork 300 according to various aspects of the present disclosure. Thecommunication network 300 includes base stations 110 and wirelesscommunication devices 120 in communication with each other. The controlcarrier component 310 includes an uplink control carrier component 301and a downlink control carrier component 302. The wireless communicationdevices 120 may transmit control data to the base stations 110 overthin-TTIs of the uplink control carrier component 301, and the basestations 110 may transmit control data to the wireless communicationdevices 120 over thin-TTIs of the downlink control carrier component302. Further, the base stations 110 may transmit user data, includingMiCri data, to the wireless communication devices 120 over the firstdata carrier component 330 and/or over the second data carrier component340. The first data carrier component 330 and the second data carriercomponent 340 may be included in a common transmission (frequency) band,or maybe part of different transmission (frequency) bands. Also, theuplink control carrier component 301 and the downlink control carriercomponent 302 may be included in a common transmission (frequency) band,or maybe part of different transmission (frequency) bands, includingpartially overlapping or completely separate transmission bads. Thefirst data carrier component 330 includes nominal TTIs 331, 332 and thesecond data carrier component 340 includes nominal TTIs 341, 342, 343(only portions of TTIs 341, 343 are shown). As shown in FIG. 3, thenominal TTIs 331, 332 are staggered in time with respect to the nominalTTIs 341, 342, 343. In various aspects, the staggering in time may be bya predetermined fractional amount (e.g., 25%, 33%, 50%, etc.) of a timelength of the nominal TTI. Further, in various aspects, thepredetermined amount may be different for different communicationnetworks.

A method 400 according to an aspect of the present disclosure to avoidthe previously discussed failure during communication of the MiCri datawill now be described. FIG. 4 illustrates the method 400 utilizing thenetwork configuration 300 illustrated in FIG. 3 according to an aspectof the present disclosure. The method starts at step 402.

At step 404, the base station 110 receives a request message 370 fromthe wireless communication device requesting MiCri data. The basestation 110 may receive the request message over a thin-TTI of theuplink control carrier component 301.

At step 406, in response to receiving the request message 370, the basestation 110 determines which data carrier component, from among thefirst data carrier component 330 and the second data carrier component340, to use to transmit the first HARQ block 351. In various aspects,the base station 110 may make this determination based on a timing ofthe request message 371. For example, as shown in FIG. 3, when therequest message 371 is received during a latter part of the presentnormal TTI 331, the base station 110 may determine that it may not bepossible to transmit both the first HARQ block 351 and the second HARQblock 352 during the present nominal TTI 331 of the first data carriercomponent 330. For example, the base station 110 may determine that itmay not be possible to transmit both the first HARQ block 351 and thesecond HARQ block 352 during the present nominal TTI 331 when therequest message 371 is received within fewer than the predeterminedthreshold number of thin-TTIs remaining in the present nominal TTI 331.However, the base station 110 determines that the first HARQ block 351and the second HARQ block 352 may be transmitted during the presentnominal TTI 342 of the second data carrier component 340. Therefore, thebase station determines that the first HARQ block 351 is to betransmitted during the present nominal TTI 342 of the second datacarrier component 340. In summary, the base station 110 determines thatthe first HARQ block 351 is to be transmitted over the first datacarrier component 330 when it is determined that both the first HARQblock 351 and the second HARQ block 352 may be transmitted during thepresent nominal TTI 331 of the first data carrier component 330. On theother hand, the base station 110 determines that the first HARQ block351 is to be transmitted over the second data carrier component 340 whenit is determined that both the first HARQ block 351 and the second HARQblock 352 may not be transmitted during the present nominal TTI 331 ofthe first data carrier component 330. In this way, as discussed furtherbelow, the base station 110 ensures that the MiCri data may be receivedby the wireless communication device 120 in compliance with the highreliability and low latency requirements.

At step 408, the base station 110 transmits a grant message 361 to thewireless communication device 120 during a thin-TTI of the downlinkcontrol carrier component 302. The grant message 361 may includeinformation indicating that the request for the MiCri data has beengranted. The grant message 361 may also include information regardingthe data carrier component over which the MiCri data is to betransmitted.

At step 410, the base station 110 may transmit the first HARQ block 351during a thin-TTI of the present nominal TTI 342 of the second datacarrier component 340, as determined in step 406. The base station 110may transmit the first HARQ block 351 substantially simultaneously oralong with the grant message 361 transmitted in step 406. For example,the base station 110 may transmit the first HARQ block 351 during athin-TTI of the present nominal TTI 342 that corresponds in time withthe thin-TTI of the downlink control carrier component 302 during whichthe grant message 361 is transmitted. Alternatively, the first HARQblock 351 may be transmitted during a thin-TTI that does not correspondin time with the thin-TTI during which the grant message 361 istransmitted.

At step 412, the base station 110 may receive either an acknowledgmentmessage or a negative acknowledgment message 371 from the wirelesscommunication device 120. The base station 110 may receive theacknowledgment message or the negative acknowledgment message 371 overthe uplink control carrier component 301. As previously discussed, thebase station 110 may receive a negative acknowledgment message 371including information regarding the interference pattern experienced bythe wireless communication device 120 during the present nominal TTI342. This information may include carrier component conditions and/orinterference patterns experienced from communication activity ofneighboring base stations and wireless communication devices.

At step 414, the base station 110 may determine whether the receivedmessage is an acknowledgment message or a negative acknowledgmentmessage. The method proceeds to step 414 when it is determined that theacknowledgment message has been received, or the message proceeds tostep 416 when it is determined that the negative acknowledgment messagehas been received.

At step 416, the base station 110 may determine that the acknowledgmentmessage 371 has been received, and that the wireless communicationdevice 120 has satisfactorily received the MiCri data in the form of thefirst HARQ block 351. That is, the base station 110 may determine thatthe wireless communication device 120 has received the MiCri data incompliance with the high reliability and low latency requirements. Atthis point, no further action with respect to communication of therequested MiCri data is necessary, and the method ends at step 426.

On the other hand, at step 418, the base station 110 may determine thatthe negative acknowledgment message 371 has been received and that thewireless communication device 120 has not satisfactorily received therequested MiCri data. That is, the base station 110 may determine thatthe wireless communication device 120 has not received the MiCri data incompliance with the high reliability and low latency requirements. Thebase station 110 may then decode the negative acknowledgment message 371to receive the included information regarding the interference pattern.

At step 420, the base station 110 may transmit another grant message 362to the wireless communication device 120 during a thin-TTI of thedownlink control carrier component 302. The grant message 362 mayinclude information indicating that the negative acknowledgment message371 was received, and that, in response to the same, a second HARQ block352 that takes into account the information regarding the interferencepattern is to be transmitted. The grant message 362 may also includeinformation regarding the data carrier component over which the secondHARQ block 352 is to be transmitted.

At step 422, the base station 110 may transmit the second HARQ block 352during a thin-TTI of the present nominal TTI 342 of the second datacarrier component 340, as shown in FIG. 3. As discussed above, thetransmission of the second HARQ block 352 takes into account theinformation regarding the interference pattern received with thenegative acknowledgment message 371. The base station 110 may transmitthe second HARQ block 352 substantially simultaneously along with thegrant message 362 transmitted in step 420. For example, the base station110 may transmit the second HARQ block 352 during a thin-TTI of thepresent nominal TTI 342 that corresponds in time with the thin-TTI ofthe downlink control carrier component 302 during which the grantmessage 362 is transmitted.

At step 424, the base station 110 should receive an acknowledgmentmessage 372 from the wireless communication device 120 indicating thatthe wireless communication device 120 has satisfactorily received theMiCri data in the form of the second HARQ block 352. The base station110 may receive this acknowledgment message 372 over the uplink controlcarrier component 301. The method proceeds to step 416.

At step 416, base station 110 determines that the acknowledgment message372 has been received, and that the wireless communication device 120has satisfactorily received the MiCri data in the form of the secondHARQ block 352. That is, the base station 110 determines that thewireless communication device 120 has received the MiCri data incompliance with the high reliability and low latency requirements. Atthis point, no further action with respect to communication of therequested MiCri data is necessary, and the method ends at step 426.

As can be appreciated, the base station 110 may be able to transmit theMiCri data immediately in response to the received request message dueto providing, as an alternate first data carrier component 330, thesecond data carrier component 340 having nominal TTIs 341, 342, 343staggered in time with respect to the nominal TTIs 331, 332 of the firstdata carrier component. That is, the addition of the second data carriercomponent 340 provides the base station 110 with flexibility inimmediately scheduling the transmission of the MiCri data during theappropriate nominal TTI to allow satisfactory communication of the MiCridata. In this way, any scheduling delays while communicating the MiCridata may be reduced and the MiCri data may be communicated in compliancewith the high reliability and low latency requirements.

According to various aspects of the present disclosure, the HARQ blocks351, 352 may be transmitted during the thin-TTIs of the nominal TTI 342by superimposing the MiCri data on the non-MiCri data transmitted duringthese thin-TTIs. That is, based on the available bandwidth during thesethin-TTIs, the MiCri data and non-MiCri data may be transmitted during acommon thin-TTI, with priority being given to transmission of the MiCridata. Further, according to various aspects of the present disclosure,any non-MiCri data previously scheduled to be transmitted over thesecond data carrier component during the thin-TTIs that are instead usedto transmit the HARQ blocks may be scheduled to be transmitted duringcorresponding (in time) thin-TTIs of the first data carrier component.In addition, according to various aspects of the present disclosure, anynon-MiCri data that is scheduled to be transmitted during the nextnominal TTI of the first data carrier component may be scheduled to betransmitted immediately during the present nominal TTI of the seconddata carrier component. For example, when a request for non-MiCri datais received during an earlier part of the present nominal TTI of thefirst data carrier component, the base station 110 may have to wait totransmit the requested non-MiCri data until the next nominal TTI of thefirst data carrier component because the requested non-MiCri data is notgiven transmission priority. However, this non-MiCri data may betransmitted during the present nominal TTI of the second data carriercomponent. As can be appreciated, the immediate scheduling of thenon-MiCri data during the present nominal TTI of the second data carriercomponent avoids delaying transmission of the non-MiCri data until thenext nominal TTI of the first data carrier component.

According to various aspects of the present disclosure, the base stationmay use an approach involving pre-reporting of the interference patternexperienced by the wireless communication devices to allow forcommunication of the MiCri data in compliance with the high reliabilityand low latency requirements. In this approach, the base station maytransmit a reference signal and receive information regarding theinterference patterns observed by various wireless communication devicesin advance to accommodate request messages that are received with fewerthan the predetermined threshold number of thin-TTIs remaining in thepresent nominal TTI. This approach provides the advantage of being ableto use a single data carrier component and of being able tosatisfactorily transmit the MiCri data via transmission of a single HARQblock. Further, the base station is able to satisfactorily transmit theMiCri data to a wireless communication device regardless of the timingof receipt of the request message during a present nominal TTI.

FIG. 5 illustrates an exemplary configuration of a communication network500 according to various aspects of the present disclosure. As shown inFIG. 5, the communication network 500 includes base stations 110 andwireless communication devices 120 in communication with each other. Forexample, the wireless communication devices 120 may transmit controldata to the base stations 110 over thin-TTIs of the uplink controlcarrier component 501, and the base stations 110 may transmit controldata to the wireless communication devices 120 over thin-TTIs of thedownlink control carrier component 502. Further, the base stations 110may transmit user data, including MiCri data, to the wirelesscommunication devices 120 over the data carrier component 530. The datacarrier component 530 includes nominal TTIs 531, 532.

A method according to an aspect of the present disclosure in accordancewith the approach involving pre-reporting of the interference patternwill now be described. FIG. 6 illustrates a method 600 utilizing thenetwork configuration 500 of FIG. 5 according to an aspect of thepresent disclosure. The method starts at step 602.

At step 604, during a thin-TTI of the present nominal TTI 531, a basestation 110 may transmit a reference signal 551 to those wirelesscommunication devices 120 that may be involved in mission-criticalapplications. Alternatively, the base station 110 may transmit thereference signal 551 to all wireless communication devices incommunication with the base station 110. The reference signal 551 mayinclude information to allow the wireless communication devices 120 tocalculate the respective interference patterns experienced by thevarious wireless communication devices 120 during the duration of thepresent nominal TTI 531. For example, the reference signal 551 mayinclude a null tone, pilot data, and/or a test signal. The base station110 may transmit the reference signal 551 at or near the beginning ofthe present nominal TTI 531. According to an aspect of the presentdisclosure, the base station 110 may transmit the reference signal 551during the first thin-TTI of the present nominal TTI 531.

At step 606, the base station 110 may commence receiving calculatedinformation regarding the respective interference patterns 520experienced by the various wireless communication devices 120 during thepresent nominal TTI 531. This calculated information may be received inthe form of pre-interference reports and may include carrier componentconditions and/or interference patterns experienced from communicationactivity of neighboring base stations and wireless communicationdevices. A pre-interference report may include information similar tothe information regarding interference patterns discussed above withrespect to FIGS. 3 and 4. The base station 110 may receive thepre-interference reports during the thin-TTIs of the uplink controlcarrier component 501. For example, the base station 110 may receive arespective pre-interference report from each of the wirelesscommunication devices 120 during respective thin-TTIs of the uplinkcontrol carrier component 501. In that regard, one or more wirelesscommunication devices 120 may be assigned to respective thin-TTIs fortiming purposes. The base station 110 may store all the receivedpre-interference reports in a local memory.

At step 608, the base station 110 receives a request message 570 from awireless communication device 120 requesting MiCri data. The basestation 110 may receive the request message over a thin-TTI of theuplink control carrier component 501.

At step 610, in response to receiving the request message 570, the basestation 110 may retrieve, from the local memory, the pre-interferencereport associated with the wireless communication device 120 thattransmitted the request message 570. The base station 110 may thendecode the retrieved pre-interference report to receive the includedcalculated information regarding the interference pattern experienced bythe MiCri-requesting wireless communication device 120 during thepresent nominal TTI 531.

At step 612, the base station 110 transmits a grant message 561 to thewireless communication device 120 during a thin-TTI of the downlinkcontrol carrier component 502. The grant message 561 may includeinformation indicating to the wireless communication device 120 that therequest for the MiCri data has been granted. The grant message 561 mayalso include information regarding the data carrier component 530 overwhich the MiCri data is to be transmitted.

At step 614, the base station 110 may transmit requested MiCri data inthe form of a single HARQ block 551 during the next thin-TTI of thepresent nominal TTI 531. The base station 110 may transmit the firstHARQ block 551 substantially simultaneously or along with the grantmessage 561 transmitted in step 612. For example, the base station 110may transmit the first HARQ block 551 during a thin-TTI of the presentnominal TTI 531 that corresponds in time with the thin-TTI of thedownlink control carrier component 502 during which the grant message561 is transmitted. Alternatively, the first HARQ block 351 may betransmitted during a thin-TTI that does not correspond in time with thethin-TTI during which the grant message 361 is transmitted. Thetransmission of the single HARQ block 551 takes into account theinformation regarding the interference pattern retrieved from thepre-interference report in step 610. In this way, the base station 110ensures satisfactory transmission of MiCri data because the transmissionof the single HARQ block 551 already takes into account the interferencepattern experienced by the wireless communication device 120 during thepresent nominal TTI 531.

At step 616, the base station 110 should receive an acknowledgmentmessage 571 from the wireless communication device 120 indicating thatthe wireless communication device 120 has satisfactorily received theMiCri data in the form of the single HARQ block 551. The base station110 may receive this acknowledgment message 571 over the uplink controlcarrier component 501.

At step 618, the base station 110 determines that the acknowledgmentmessage 571 has been received, and that the wireless communicationdevice 120 has satisfactorily received the MiCri data in the form of thesingle HARQ block 551. That is, the base station 110 determines that thewireless communication device 120 has received the MiCri data incompliance with the high reliability and low latency requirements. Atthis point, no further action with respect to communication of therequested MiCri data is necessary, and the method ends at step 620.

As can be appreciated, due to the approach of receiving pre-interferencereports, the base station 110 may be able to transmit the MiCri dataimmediately in response to the received request message. This reducesthe scheduling delay in communicating the MiCri data and also ensuresthat the MiCri data is communicated in compliance with the highreliability and low latency requirements. This approach also providesthe advantage of being able to use a single data carrier component andof being able to satisfactorily transmit the MiCri data via transmissionof a single HARQ block. Finally, the base station is able tosatisfactorily transmit the MiCri data to a wireless communicationdevice regardless of the timing of receipt of the request message duringa present nominal TTI.

According to various aspects of the present disclosure, the single HARQblock 551 may be transmitted during the thin-TTI of the nominal TTI 531by superimposing the MiCri data on the non-MiCri data transmitted duringthis thin-TTI. That is, based on the available bandwidth during thethin-TTI, the MiCri data and non-MiCri data may be transmitted duringthe thin-TTI, with priority being given to transmission of the MiCridata. For example, the base station 110 may transmit the single HARQblock 551 by completely utilizing the bandwidth available during thethin-TTI. Alternatively, the base station 110 may transmit the singleHARQ block 551 by utilizing a fraction of the bandwidth available duringthe thin-TTI. According to various aspects of the present disclosure,the non-MiCri data that was previously scheduled to be transmittedduring the thin-TTI of the nominal TTI 531, which is now used totransmit the single HARQ block 551, may be scheduled to be transmittedduring the next available thin-TTI of the present nominal TTI 531.

The base station 110 may continue applying the pre-interference reportapproach in the next nominal TTI 532, as shown in FIG. 5. In this case,the base station 110 may receive the request message 572, may transmitthe grant message 562 and a first HARQ block 553, and may receive theacknowledgment message 573, as discussed above. Alternatively, when thebase station 110 expects to receive a request message during an earlierpart of the next nominal TTI 532, the base station 110 may apply theapproach discussed above with respect to FIG. 2.

FIG. 7 illustrates a block diagram of an exemplary system 700 forcommunicating MiCri data in accordance with various aspects of thepresent disclosure. As shown in FIG. 7, the system 700 includes a basestation 710 and a wireless communication device 740. The base station710 and the wireless communication device 740 may be communicativelycoupled via a wireless connection according to one or more protocols(e.g., a 3^(rd) generation (3G) protocol, an 802.11 protocol, an 802.15protocol, a long term evolution (LTE) protocol, a 5^(th) generation (5G)protocol, etc.). The illustrated base station 710 may be the previouslydiscussed base stations 110 a, 110 b, 110 c, and the illustratedwireless communication device (WCD) may be the previously discussedwireless communication devices 120.

The wireless communication device 740 may be a mobile communicationdevice (e.g., a smartphone, a cellular telephone, a personal digitalassistant, etc.), a tablet computing device, a laptop computing device,a vehicle, a gaming console, a machine, a personal computing device, ane-reader device, a sensor device, another electronic device, or acombination of these devices that is operable to perform the operationsdescribed herein with respect to the wireless communication device 740.The wireless communication device 740 may include a processor 742, amemory 744, a modem subsystem 752, a radio frequency (RF) unit 754, andantenna elements 756. The RF unit 756 may be configured to process(e.g., perform analog to digital conversion, power amplification, etc.)of transmissions received via the antenna elements 756 (e.g.,transmissions between the base station 710 and the wirelesscommunication device 740) and the modem subsystem 752 may be configuredto demodulate and/or decode the transmissions. Additionally, the modemsubsystem 752, the RF unit 756, and the antenna elements 756 may also beused for transmissions originating from the wireless communicationdevice 740 (e.g., uplink transmissions). The processor 742 may include acentral processing unit (CPU), a digital signal processor (DSP), anapplication specific integrated circuit (ASIC), a controller, a fieldprogrammable gate array (FPGA) device, another hardware device, afirmware device, or any combination thereof configured to perform theoperations described herein with reference to the wireless communicationdevice 740 in connection with FIG. 7.

The memory 744 may include a cache memory (e.g., a cache memory of theprocessor 742), random access memory (RAM), magnetoresistive RAM (MRAM),read-only memory (ROM), programmable read-only memory (PROM), erasableprogrammable read only memory (EPROM), electrically erasableprogrammable read only memory (EEPROM), flash memory, solid state memorydevice, hard disk drives, other forms of volatile and non-volatilememory, or a combination of different types of memory. The memory 744may store instructions 746 and a database 748. The database 748 mayinclude MiCri data information 750. The MiCri data information 750 mayinclude all or some of the types of information described in connectionwith the MiCri data information 720 below. However, the MiCri datainformation 750 may be specific to the wireless communication device740, whereas the MiCri data information 720 may be associated withmultiple difference types and/or configurations of mobile devices. Theinstructions 746 may include instructions that, when executed by theprocessor 742, cause the processor 742 to perform the operationsdescribed herein with reference to the wireless communication device 740in connection with FIGS. 1-7.

The base station 710 may be an evolved Node B (eNodeB) (e.g., one of theeNodeBs 110 of FIG. 1), a macro cell (e.g., one of the macro cells 102a, 102 b, 102 c of FIG. 1), a pico cell, a femto cell, a relay station,an access point, or another electronic device operable to perform theoperations described herein with respect to the base station 710. Thebase station 710 may operate in accordance with one or morecommunication standards, such as a 3rd generation (3G) wirelesscommunication standard, a 4th generation (4G) wireless communicationstandard, a long term evolution (LTE) wireless communication standard,an LTE-advanced wireless communication standard, or another wirelesscommunication standard now known or later developed (e.g., a nextgeneration network operating according to a 5G protocol).

As shown in FIG. 7, the base station 710 includes a processor 712, amemory 716, a scheduler 722, a modem subsystem 724, a radio frequency(RF) unit 726, and antenna elements 728. The processor 712 may include aCPU, a DSP, an ASIC, a controller, a FPGA device, another hardwaredevice, a firmware device, or any combination thereof configured toperform the operations described herein with reference to the basestation 710 in connection with FIGS. 1-7. The RF unit 726 may beconfigured to process (e.g., perform digital to analog conversion, poweramplification, etc.) of transmissions originating from the base station710 that may be transmitted via the antenna elements 728 (e.g.,transmissions between the base station 710 and the wirelesscommunication device 740) and the modem subsystem 724 may be configuredto modulate and/or encode the transmissions according to a modulationand coding scheme (MCS), as described in more detail below.Additionally, the modem subsystem 724, the RF unit 726, and the antennaelements 728 may also be used for receiving transmissions originatingfrom the wireless communication device 740 (e.g., uplink transmissions).

The memory 714 may include a cache memory (e.g., a cache memory of theprocessor 412), RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, asolid state memory device, one or more hard disk drives, other forms ofvolatile and non-volatile memory, or a combination of different types ofmemory. The memory 714 may store instructions 716. The instructions 716may include instructions that, when executed by the processor 712, causethe processor 712 to perform operations described in connection withFIGS. 1-7 of the present disclosure.

The memory 714 may store a database 718. In an aspect, the database 718may be stored external to the base station 710. For example, thedatabase 718 may be stored at memory device accessible to the basestation 710 via a network, such as a backhaul network of a wirelesscommunication system in which the base station 710 is operating. Asanother example, the base station 710 may be a pico cell or a femto celloperating within a coverage area provided by a macro cell (e.g., themacro cell 102 b or the macro cell 102 c, respectively), and thedatabase 718 may be stored at a memory of the macro cell. In thisexample, the database 718 may be accessible via a connection (e.g., awired or wireless connection) between the base station 710 and the macrocell.

The database 718, whether stored at the memory 714 or at anotherlocation accessible to the base station 710, may store MiCri datainformation 720. The MiCri data information 720 may include informationassociated with the wireless communication device 740 and/or othermobile devices. The MiCri data information 720 may include informationassociated with one or more parameters that may be used to configure atransmission between the base station 710 and the wireless communicationdevice 740. The one or more parameters may include at least oneparameter that affects an amount of MiCri data communicated by thewireless communication device 740. The MiCri data information 720 may berespectively constructed for each different wireless communicationdevice 740 (e.g., per SKU of the wireless communication device 740). Toillustrate, the wireless communication device 740 may support decodingof transmissions using one or more modulation and coding schemes (MCSs)(e.g., a low-density parity check (LDPC) coding scheme, a turbo codingscheme, a convolutional coding scheme, etc.), one or more transmissionmodes (e.g., single layer transmissions, multilayer transmissions,single user multiple-input multiple-output (SU-MIMO), multi-usermultiple-input multiple-output (MU-MIMO), transmit diversity,beamforming, etc.), one or more carrier aggregation (CA) schemes, one ormore duplex modes (e.g., time division duplexing (TDD) and/or frequencydivision duplexing (FDD)), one or more UE categories, one or moreinterference management techniques (e.g., enhanced inter-cellinterference coordination (eICIC), network assisted interferencecancellation (NAIC), etc.), one or more frame structures, othercapabilities of the wireless communication device 740, or a combinationthereof. Each of these capabilities of the wireless communication device740 may be used by the base station 710 to configure the transmissionsbetween the base station 710 and the wireless communication device 740,and the energy consumed by the wireless communication device 740 forprocessing the transmissions may vary based on the parameters selectedby the base station 710 for configuring the transmissions between thebase station 710 and the wireless communication device 740.

In an aspect, the scheduler 722 may configure at least a portion of thetransmission between the base station 710 and the wireless communicationdevice 740. For example, the scheduler 722 may configure transmissionbetween the base station 710 and the wireless communication device 740based on an amount of data available in a data buffer for transmission.The scheduler 722 may configure the transmission between the basestation 710 and the wireless communication device 740 per symbol period,subframe basis or frame basis. For example, the scheduler 722 mayschedule the transmission using a number of resource blocks. The numberof resource blocks scheduled for the transmission may be determinedbased at least in part on the identified energy metric. Configuring thetransmission between the base station 710 and the wireless communicationdevice 740 may include determining a transport block size to be used forthe transmission between the base station 710 and the wirelesscommunication device 740. The transport block size may be determinedbased at least in part on the energy metric. In an aspect, the scheduler722 may schedule the transmission based at least in part on thetransport block size.

As those of some skill in this art will by now appreciate and dependingon the particular application at hand, many modifications, substitutionsand variations can be made in and to the materials, apparatus,configurations and methods of use of the devices of the presentdisclosure without departing from the spirit and scope thereof. In lightof this, the scope of the present disclosure should not be limited tothat of the particular embodiments illustrated and described herein, asthey are merely by way of some examples thereof, but rather, should befully commensurate with that of the claims appended hereafter and theirfunctional equivalents.

What is claimed is:
 1. A method for wireless communication, the methodcomprising: receiving, at a first device, a request message from asecond device requesting mission critical (MiCri) data; andtransmitting, from the first device, the MiCri data to the second deviceduring a transmission time interval (TTI) of a first carrier componentor during a transmission time interval (TTI) of a second carriercomponent, the TTI of the first carrier component being partiallyoverlapped in time with the TTI of the second carrier component suchthat end times of the partially overlapped TTI of the first carriercomponent and the second carrier component are different.
 2. The methodaccording to claim 1, wherein the transmitting the MiCri data includestransmitting the MiCri data over the first carrier component or thesecond carrier component based on a timing of the request message. 3.The method according to claim 2, wherein the transmitting the MiCri dataincludes transmitting a first hybrid automated repeat request (HARQ)block and a second HARQ block.
 4. The method according to claim 3,further comprising: scheduling transmission of the MiCri data over thefirst carrier component when a determination result indicates that thefirst HARQ block and the second HARQ block can both be transmittedduring the TTI of the first carrier component; and schedulingtransmission of the MiCri data over the second carrier component when adetermination result indicates that the first HARQ block and the secondHARQ block cannot both be transmitted during the TTI of the firstcarrier component.
 5. The method according to claim 3, whereintransmitting the second HARQ block comprises: receiving a negativeacknowledgment (NACK) from the second device in response to transmittingthe first HARQ block; and transmitting the second HARQ block in responseto the receiving the NACK.
 6. The method according to claim 1, furthercomprising: transmitting, over a downlink control carrier component, agrant message granting the request for the MiCri data, wherein thetransmitting the MiCri data includes transmitting the MiCri data alongwith the grant message.
 7. The method according to claim 1, wherein thefirst carrier component and the second carrier component are included ina common transmission band.
 8. The method according to claim 1, whereinthe first carrier component is included in a first transmission band andthe second carrier component is included in a second transmission banddifferent than the first transmission band.
 9. The method according toclaim 1, further comprising: receiving, at the first device, anotherrequest message from the second device requesting non-MiCri data; andtransmitting, from the first device, the non-MiCri data to the seconddevice during a next available TTI from among the TTI of the firstcarrier component and the TTI of a second carrier component.
 10. Amethod for wireless communication, the method comprising: transmitting,to a first device from a second device, a request message requestingmission critical (MiCri) data; and receiving, at the second device, theMiCri data from the first device during a transmission time interval(TTI) of a first carrier component or during a transmission timeinterval (TTI) of a second carrier component, the TTI of the firstcarrier component being partially overlapped in time with the TTI of thesecond carrier component such that end times of the partially overlappedTTI of the first carrier component and the second carrier component aredifferent.
 11. The method according to claim 10, wherein the receivingincludes receiving the MiCri data over the first carrier component orthe second carrier component based on a timing of the request message.12. The method according to claim 11, wherein the receiving the MiCridata includes receiving a first hybrid automated repeat request (HARQ)block and a second HARQ block.
 13. The method according to claim 12,wherein the receiving the MiCri data comprises: receiving the MiCri dataover the first carrier component when a determination result indicatesthat the first HARQ block and the second HARQ block can both be receivedduring the TTI of the first carrier component; and receiving the MiCridata over the second carrier component when a determination resultindicates that the first HARQ block and the second HARQ block cannotboth be received during the TTI of the first carrier component.
 14. Themethod according to claim 12, wherein receiving the second HARQ blockcomprises: transmitting a negative acknowledgment (NACK) to the firstdevice in response to receiving the first HARQ block; and receiving thesecond HARQ block in response to the transmitting the NACK.
 15. Themethod according to claim 10, further comprising: receiving, over adownlink control carrier component, a grant message granting the requestfor the MiCri data, wherein the receiving the MiCri data includesreceiving the MiCri data along with the grant message.
 16. The methodaccording to claim 10, wherein the first carrier component and thesecond carrier component are included in a common reception band. 17.The method according to claim 10, wherein the first carrier component isincluded in a first reception band and the second carrier component isincluded in a second reception band different than the first receptionband.
 18. The method according to claim 10, further comprising:transmitting, from the second device, another request message to thefirst device requesting non-MiCri data; and receiving, at the seconddevice, the non-MiCri data from the first device during a next availableTTI from among the TTI of the first carrier component and the TTI of asecond carrier component.
 19. A base station, comprising: a receiverconfigured to receive a request message from a first device requestingmission critical (MiCri) data; and a transmitter configured to transmitthe MiCri data to the first device during a transmission time interval(TTI) of a first carrier component or during a transmission timeinterval (TTI) of a second carrier component, wherein the TTI of thefirst carrier component is partially overlapped in time with the TTI ofthe second carrier component such that end times of the partiallyoverlapped TTI of the first carrier component and the second carriercomponent are different.
 20. The base station according to claim 19,wherein the transmitter is configured to transmit the MiCri data overthe first carrier component or the second carrier component based on atiming of the request message.
 21. The base station according to claim20, wherein, to transmit the MiCri data, the transmitter is configuredto transmit a first hybrid automated repeat request (HARQ) block and asecond HARQ block.
 22. The base station according to claim 21, furthercomprising: a scheduler configured to: schedule transmission of theMiCri data over the first carrier component when a determination resultindicates that the first HARQ block and the second HARQ block can bothbe transmitted during the TTI of the first carrier component, andschedule transmission of the MiCri data over the second carriercomponent when a determination result indicates that the first HARQblock and the second HARQ block cannot both be transmitted during theTTI of the first carrier component.
 23. The base station according toclaim 19, wherein the receiver is configured to receive another requestmessage from the first device requesting non-MiCri data; and thetransmitter is configured to transmit the non-MiCri data during a nextavailable TTI from among the TTI of the first carrier component and theTTI of a second carrier component.
 24. A user equipment (UE),comprising: a transmitter configured to transmit a request message to afirst device requesting mission critical (MiCri) data; and a receiverconfigured to receive the MiCri data from the first device during atransmission time interval (TTI) of a first carrier component or duringa transmission time interval (TTI) of a second carrier component,wherein the TTI of the first carrier component is partially overlappedin time with the TTI of the second carrier component such that end timesof the partially overlapped TTI of the first carrier component and thesecond carrier component are different.
 25. The user equipment accordingto claim 24, wherein the receiver is configured to receive the MiCridata over the first carrier component or the second carrier componentbased on a timing of the request message.
 26. The user equipmentaccording to claim 25, wherein the receiver is configured to receive theMiCri data as a first hybrid automated repeat request (HARQ) block and asecond HARQ block.
 27. The user equipment according to claim 26, whereinthe receiver is configured to receive the MiCri data over the firstcarrier component when a determination result indicates that the firstHARQ block and the second HARQ block can both be received during the TTIof the first carrier component, and to receive the MiCri data over thesecond carrier component when a determination result indicates that thefirst HARQ block and the second HARQ block cannot both be receivedduring the TTI of the first carrier component.
 28. The user equipmentaccording to claim 26, wherein the transmitter is configured to transmita negative acknowledgment (NACK) to the first device in response toreceiving the first HARQ block; and receiver is configured to receivethe second HARQ block in response to the transmitting the NACK.
 29. Theuser equipment according to claim 24, wherein the receiver is configuredto receive a grant message granting the request of the MiCri data, andto receive the MiCri data along with the grant message.
 30. The userequipment according to claim 24, wherein the transmitter is configuredto transmit another request message to the first device requestingnon-MiCri data; and the receiver is configured to receive the non-MiCridata from the first device during a next available TTI from among theTTI of the first carrier component and the TTI of a second carriercomponent.